Gemstone



FIG. 1 is a top plan view of a gemstone according to a first embodiment showing my new design;

FIG.2 is an end elevational view thereof, the opposite end view being a mirror image;

FIG. 3 is a side elevational view thereof, the opposite side view being a mirror image;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a top plan view of a gemstone according to a second embodiment of my design;

FIG. 6 is a side elevational view thereof, the opposite side view being a mirror image;

FIG. 7 is an end elevational view thereof, the opposite end view being a mirror image; and,

FIG. 8 is a bottom plan view thereof. 

The ornamental design for a gemstone, as shown and described. 